NHA CPT NHA Certified Phlebotomy Technician - Set 3 - Part 3

Correct Answer: Withdraw, firm pressure, notify clinician

the bright red pulsatile flow signals arterial puncture, which requires immediate withdrawal, firm pressure for five to ten minutes, and clinical notification. Observation for hematoma is needed afterward. Option a is incorrect because continuing because flow is rapid ignores the arterial signal and risks a large hematoma or aneurysm formation. The phlebotomist must stop the draw promptly. The standard reflects current practice in routine clinical phlebotomy. Option b is incorrect because switching to a smaller tube and finishing the draw still uses an arterial site, which is unsafe. Arterial puncture requires withdrawal and pressure rather than continued specimen collection. Option c is incorrect because applying a tourniquet above the puncture site does not address arterial bleeding directly and may worsen distal flow. Direct firm pressure at the site is the standard approach.

Correct Answer: Stop, recline with legs elevated

the recommended response is to stop the draw, safely remove the needle, recline the chair fully, and elevate the legs to support venous return. A cool damp cloth and observation complete recovery. Option b is incorrect because continuing the draw quickly risks a complete syncopal event with possible fall and injury. Patient safety requires stopping the procedure to prevent loss of consciousness. The standard reflects current practice in routine clinical phlebotomy. Option c is incorrect because walking the patient to fresh air is unsafe during prodromal syncope, since loss of consciousness during ambulation may produce a fall. Reclining and elevating legs is the established response. Option d is incorrect because offering hot coffee adds a hot liquid risk during impending loss of consciousness and provides no physiologic benefit. The proper management is positional and supportive only. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: Excessive shaking or mixing

the E in SHEARS represents excessive shaking or mixing during transport or handling. Mechanical agitation lyses red cells through shear stress, releasing potassium and lactate dehydrogenase. The standard reflects current practice in routine clinical phlebotomy. Option a is incorrect because the S in SHEARS represents a small needle on a high-vacuum tube, which is a different cause. The current scenario centers on shaking, which is the E rather than the S. Option c is incorrect because the R in SHEARS represents reflux from an underfilled additive tube, where blood flows backward into the patient. The scenario focuses on shaking during transport, not reflux events. Option d is incorrect because the A in SHEARS represents alcohol not yet dry at the puncture site. The scenario centers on mechanical agitation rather than wet alcohol contamination. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: Capillary rupture from pressure or low platelets

petechiae arise from capillary rupture under elevated venous pressure or in patients with low platelets or fragile vessels. The pinpoint pattern reflects small vessel leakage rather than a frank hematoma. Option a is incorrect because an allergic skin response to alcohol typically presents as redness or hives at the contact area rather than scattered petechiae. The mechanism in petechiae is mechanical, not allergic. Option b is incorrect because friction from a gauze pad does not produce petechiae and would not cause capillary rupture in scattered points. The pattern reflects vascular pressure or coagulation issues. The standard reflects current practice in routine clinical phlebotomy. Option d is incorrect because dehydrated skin produces dryness and possibly cracking but not pinpoint petechiae. The finding requires capillary rupture, which depends on pressure or platelet issues. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: Tube content contacts needle, arm low

reflux occurs when tube content contacts the needle and the arm is below heart level, allowing additive to flow back into the vein. The phlebotomist prevents reflux by keeping the arm slightly downward. Option a is incorrect because high vacuum in the tube draws blood out, not back into the patient. Vacuum directionality goes from vein to tube during normal flow, not toward the patient. The standard reflects current practice in routine clinical phlebotomy. Option b is incorrect because releasing the tourniquet too soon affects venous pressure but does not directly cause reflux of additive. Reflux depends on tube content contacting the needle while the arm sits low. Option c is incorrect because raising the patient's arm above the heart actually reduces reflux risk by reversing the gravitational gradient. The reflux mechanism requires the arm below heart level instead. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: Withdraw, place gauze, apply pressure

the recommended post-draw sequence withdraws the needle, places gauze on the site, then applies pressure for one to two minutes. The order keeps gauze clean and supports hemostasis. Option b is incorrect because applying pressure only during withdrawal is incomplete, since hemostasis takes one to two minutes after needle removal. The post-draw sequence requires sustained pressure with gauze in place. Option c is incorrect because applying pressure for ten minutes for every routine draw is excessive in patients without anticoagulation. One to two minutes typically suffices for routine venipuncture without bleeding risk. The standard reflects current practice in routine clinical phlebotomy. Option d is incorrect because placing gauze first, then withdrawing the needle through it, contaminates the gauze with blood as the needle exits. The correct order keeps the gauze clean and ready. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: It contains tissue fluid that dilutes specimen

the first drop contains tissue fluid that dilutes the specimen and skews analyte concentrations. Wiping it away ensures collected drops better represent capillary blood, improving accuracy for bilirubin screening. Option a is incorrect because the first drop does not contain unusually high potassium that would justify wiping it away. The rationale is tissue fluid contamination rather than electrolyte differences in any case. Option b is incorrect because the first drop does not contain notably more red cells than subsequent drops. The reason for wiping rests on tissue fluid dilution rather than cell density. The standard reflects current practice in routine clinical phlebotomy. Option d is incorrect because the first drop is not sterile, since the puncture site is treated with antiseptic but is not surgically sterile. The rationale rests on tissue fluid dilution. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: EDTA first, additives, serum last

the capillary fill order places EDTA first to preserve cell counts before platelet clumping begins. Other additive tubes follow, and serum or clot tubes come last, which inverts the venous order. Option a is incorrect because placing bilirubin first and EDTA last reverses the capillary fill order. Platelet clumping in capillary blood begins quickly, so EDTA must be filled first to preserve accurate counts. Option c is incorrect because starting with whole blood gas tubes is not the standard capillary fill order for routine collections. Capillary blood gas is a separate workflow from routine capillary collection. The standard reflects current practice in routine clinical phlebotomy. Option d is incorrect because serum tubes first allow clotting to complete before the EDTA tube fills, leaving the CBC specimen unreliable. The capillary fill order specifically prioritizes EDTA to capture platelet counts.

Correct Answer: Two point zero millimeters

the CLSI maximum heel-stick depth for full-term newborns is two point zero millimeters. Premature neonates require shallower depths around one millimeter to avoid bone injury given thinner heel pads. Option a is incorrect because two point five millimeters exceeds the full-term newborn maximum and risks calcaneus contact. The standard limit at two point zero protects the bone in routine collection. The standard reflects current practice in routine clinical phlebotomy. Option b is incorrect because three point five millimeters is far beyond the safe depth and would frequently contact the calcaneus. The standard limit at two point zero reflects safety margins documented in CLSI guidance. Option c is incorrect because five millimeters is the depth used in some adult fingerstick devices rather than newborn heel sticks. The newborn limit at two point zero protects the calcaneus. The standard reflects current practice in routine clinical phlebotomy.

Correct Answer: Keep bandage on, watch for bleeding

anticoagulated patients should keep the bandage on for several hours, avoid heavy lifting on that arm, and watch for delayed bleeding or hematoma. The instructions reduce bleeding risk and help recognize warning signs. Option a is incorrect because removing the bandage in fifteen minutes is too soon for an anticoagulated patient with prolonged bleeding tendency. The bandage should remain longer to support hemostasis at the site. Option b is incorrect because telling the patient to drive immediately ignores residual bleeding risk and any vasovagal precaution. Standard instructions advise observation before leaving and longer activity precautions. The standard reflects current practice in routine clinical phlebotomy. Option d is incorrect because applying heat immediately to the puncture site can worsen bleeding by promoting vasodilation. The standard sequence avoids heat in the immediate post-draw window for anticoagulated patients. The standard reflects current practice in routine clin